I really hope he doesn't work very much. I think it's key to this movie to withold as many intact elements from the OT as possible. Mostly imperial ships, they shouldn't be tinkered with. After seeing new designs in every movie since 99, a little rest and continuity would be welcome.
I'm sure a solution can be found inside the story to explain that, like military technology didn't need to be further developed in peaceful times and therefore the fleet was conserved.